I ran a turbo blanket and manifold blanket on my old cummins diesel and saw a noticeable egt reduction. Keeps engine bay temps much lower. Also ran one on my turbo civic and water temps were cooler. Will be doing manifold and turbo blanket on the sidekick too.
I work at a turbo manufacturer and there is also a reduction in oil drain temps from the bearing housing on the test stand. Even a piece of ghetto sheetmetal between the turbine housing and bearing housing reduces oil temps in the bearing housing. Try to get a blanket that wraps around the turbine housing sides well.
I used crdpower.com and he will custom make any size you need. The material won't crack or disintegrate either and his prices were very reasonable.